iconview.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <vcl/toolkit/treelistentry.hxx>
#include <vcl/toolkit/viewdataentry.hxx>
#include <iconview.hxx>
#include "iconviewimpl.hxx"
#include <vcl/uitest/uiobject.hxx>
#include <tools/json_writer.hxx>
#include <vcl/toolkit/svlbitm.hxx>
#include <tools/stream.hxx>
#include <vcl/cvtgrf.hxx>
#include <comphelper/base64.hxx>

IconView::IconView(vcl::Window* pParent, WinBits nBits)
    : SvTreeListBox(pParent, nBits)
{
    nColumns = 1;
    mbCenterAndClipText = true;
    SetEntryHeight(100);
    SetEntryWidth(100);

    pImpl.reset(new IconViewImpl(this, GetModel(), GetStyle()));
}

void IconView::Resize()
{
    Size aBoxSize = Control::GetParent()->GetOutputSizePixel();

    if (!aBoxSize.Width())
        return;

    SetSizePixel(aBoxSize);

    nColumns = aBoxSize.Width() / nEntryWidth;

    SvTreeListBox::Resize();
}

tools::Rectangle IconView::GetFocusRect(const SvTreeListEntry*, tools::Long nEntryPos)
{
    Size aSize;
    aSize.setHeight(nEntryHeight);
    aSize.setWidth(nEntryWidth);

    Point aPos;
    aPos.setX(0);
    aPos.setY(0);

    tools::Rectangle aRect;

    short nCols = GetColumnsCount();

    if (nCols)
    {
        aPos.setY((nEntryPos / nCols) * nEntryHeight);
        aPos.setX((nEntryPos % nCols) * nEntryWidth);
    }

    aRect.SetPos(aPos);
    aRect.SetSize(aSize);

    return aRect;
}

void IconView::PaintEntry(SvTreeListEntry& rEntry, tools::Long nX, tools::Long nY,
                          vcl::RenderContext& rRenderContext)
{
    tools::Rectangle aRect; // multi purpose

    pImpl->UpdateContextBmpWidthMax(&rEntry);

    short nTempEntryHeight = GetEntryHeight();
    short nTempEntryWidth = GetEntryWidth();

    Point aEntryPos;

    Color aBackupTextColor(rRenderContext.GetTextColor());
    vcl::Font aBackupFont(rRenderContext.GetFont());
    Color aBackupColor = rRenderContext.GetFillColor();

    bool bCurFontIsSel = false;
    const WinBits nWindowStyle = GetStyle();
    const bool bHideSelection = (nWindowStyle & WB_HIDESELECTION) != 0 && !HasFocus();
    const StyleSettings& rSettings = rRenderContext.GetSettings().GetStyleSettings();

    vcl::Font aHighlightFont(rRenderContext.GetFont());
    const Color aHighlightTextColor(rSettings.GetHighlightTextColor());
    aHighlightFont.SetColor(aHighlightTextColor);

    Size aOutputSize = GetOutputSizePixel();
    if (aOutputSize.getHeight() < nTempEntryHeight)
        nTempEntryHeight = aOutputSize.getHeight();

    Size aRectSize(nTempEntryWidth, nTempEntryHeight);

    SvViewDataEntry* pViewDataEntry = GetViewDataEntry(&rEntry);

    sal_uInt16 nItemCount = rEntry.ItemCount();
    sal_uInt16 nCurItem = 0;
    sal_uInt16 nIconItem = nItemCount;

    while (nCurItem < nItemCount)
    {
        SvLBoxItem* pItem = nCurItem < nItemCount ? &rEntry.GetItem(nCurItem) : nullptr;
        SvLBoxItemType nItemType = pItem->GetType();

        if (nItemType == SvLBoxItemType::ContextBmp)
        {
            nIconItem = nCurItem;
            nCurItem++;
            continue;
        }

        auto nItemHeight = SvLBoxItem::GetHeight(pViewDataEntry, nCurItem);

        aEntryPos.setX(nX);
        aEntryPos.setY(nY);

        // set background pattern/color

        Wallpaper aWallpaper = rRenderContext.GetBackground();

        if (pViewDataEntry->IsHighlighted())
        {
            Color aNewWallColor = rSettings.GetHighlightColor();
            // if the face color is bright then the deactivate color is also bright
            // -> so you can't see any deactivate selection
            if (bHideSelection && !rSettings.GetFaceColor().IsBright()
                && aWallpaper.GetColor().IsBright() != rSettings.GetDeactiveColor().IsBright())
            {
                aNewWallColor = rSettings.GetDeactiveColor();
            }
            // set font color to highlight
            if (!bCurFontIsSel)
            {
                rRenderContext.SetTextColor(aHighlightTextColor);
                rRenderContext.SetFont(aHighlightFont);
                bCurFontIsSel = true;
            }
            aWallpaper.SetColor(aNewWallColor);
        }
        else // no selection
        {
            if (bCurFontIsSel)
            {
                bCurFontIsSel = false;
                rRenderContext.SetTextColor(aBackupTextColor);
                rRenderContext.SetFont(aBackupFont);
            }
            else
            {
                aWallpaper.SetColor(rEntry.GetBackColor());
            }
        }

        // draw background
        if (!(nTreeFlags & SvTreeFlags::USESEL))
        {
            aRect.SetPos(aEntryPos);
            aRect.SetSize(aRectSize);

            Color aBackgroundColor = aWallpaper.GetColor();
            if (aBackgroundColor != COL_TRANSPARENT)
            {
                rRenderContext.SetFillColor(aBackgroundColor);
                // this case may occur for smaller horizontal resizes
                if (aRect.Left() < aRect.Right())
                    rRenderContext.DrawRect(aRect);
            }
        }

        // center vertically
        aEntryPos.AdjustY((nTempEntryHeight - nItemHeight) / 2);

        aEntryPos.AdjustY(15);

        pItem->Paint(aEntryPos, *this, rRenderContext, pViewDataEntry, rEntry);

        rRenderContext.SetFillColor(aBackupColor);

        nCurItem++;
    }

    // draw icon
    if (nIconItem != nItemCount && nIconItem < nItemCount)
    {
        SvLBoxItem* pItem = &rEntry.GetItem(nIconItem);
        auto nItemWidth = pItem->GetWidth(this, pViewDataEntry, nIconItem);
        auto nItemHeight = SvLBoxItem::GetHeight(pViewDataEntry, nIconItem);

        aEntryPos.setX(nX);
        aEntryPos.setY(nY);

        // center horizontally
        aEntryPos.AdjustX((nTempEntryWidth - nItemWidth) / 2);
        // center vertically
        aEntryPos.AdjustY((nTempEntryHeight - nItemHeight) / 2);

        aEntryPos.AdjustY(-10);

        pItem->Paint(aEntryPos, *this, rRenderContext, pViewDataEntry, rEntry);
    }

    if (bCurFontIsSel)
    {
        rRenderContext.SetTextColor(aBackupTextColor);
        rRenderContext.SetFont(aBackupFont);
    }
}

FactoryFunction IconView::GetUITestFactory() const { return IconViewUIObject::create; }

static OUString extractPngString(const SvLBoxContextBmp* pBmpItem)
{
    BitmapEx aImage = pBmpItem->GetBitmap1().GetBitmapEx();
    SvMemoryStream aOStm(65535, 65535);
    if (GraphicConverter::Export(aOStm, aImage, ConvertDataFormat::PNG) == ERRCODE_NONE)
    {
        css::uno::Sequence<sal_Int8> aSeq(static_cast<sal_Int8 const*>(aOStm.GetData()),
                                          aOStm.Tell());
        OUStringBuffer aBuffer("data:image/png;base64,");
        ::comphelper::Base64::encode(aBuffer, aSeq);
        return aBuffer.makeStringAndClear();
    }

    return "";
}

static void lcl_DumpEntryAndSiblings(tools::JsonWriter& rJsonWriter, SvTreeListEntry* pEntry,
                                     const SvTreeListBox* pTabListBox)
{
    while (pEntry)
    {
        auto aNode = rJsonWriter.startStruct();

        // simple listbox value
        const SvLBoxItem* pIt = pEntry->GetFirstItem(SvLBoxItemType::String);
        if (pIt)
            rJsonWriter.put("text", static_cast<const SvLBoxString*>(pIt)->GetText());

        pIt = pEntry->GetFirstItem(SvLBoxItemType::ContextBmp);
        if (pIt)
        {
            const SvLBoxContextBmp* pBmpItem = static_cast<const SvLBoxContextBmp*>(pIt);
            if (pBmpItem)
                rJsonWriter.put("image", extractPngString(pBmpItem));
        }

        if (pTabListBox->IsSelected(pEntry))
            rJsonWriter.put("selected", "true");

        rJsonWriter.put("row",
                        OString::number(pTabListBox->GetModel()->GetAbsPos(pEntry)).getStr());

        pEntry = pEntry->NextSibling();
    }
}

void IconView::DumpAsPropertyTree(tools::JsonWriter& rJsonWriter)
{
    SvTreeListBox::DumpAsPropertyTree(rJsonWriter);
    rJsonWriter.put("type", "iconview");
    auto aNode = rJsonWriter.startArray("entries");
    lcl_DumpEntryAndSiblings(rJsonWriter, First(), this);
}

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